Greenheck Fan NYD Ventilation Hood User Manual


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3
Model NYD & NYB
Options and Accessories
Dampers - Gravity and
motorizeddampersare
designed to prevent outside
air from entering back into
the building when the fan is
off.Dampersizesareshown
on the performance pages.
Disconnect Switches-A
wideselectionofNEMA
rated switches are available
for positive electrical
shutoff and safety, including
dust-tight, rainproof
and corrosion-resistant.
Switches may be internally
or externally mounted.
CurbExtension -
Extensions raise the fan
discharge above the
roofline and provide an
accessible mounting
location for dampers. Insect screen bases
constructed with a removable fine mesh are
recommended for applications where insect
entry must be prevented.
RoofCurbs -
Prefabricated
roof curbs reduce
installation time and
costs by ensuring
compatibility between
the fan, curb and roof
opening.Allcurbsare
insulatedwithfiberglass.Awidevarietyofroof
curbs are available including: flanged, pitched
and sound-absorbing.
CurbSeal - Rubber seal between fan and curb
to assure proper sealing when attached to a
curb.
Coatings - Wide variety of
coatings and colors are
available for decorative to
corrosive applications.
Permatector™is our standard
coating.Typicallyusedfor
applications that require
corrosion resistance in indoor
and outdoor environments.
Hi-ProPolyesteris resistant to salt water,
chemical fumes and moisture in more
corrosiveatmospheres.Typicallyusedfor
applications that require superior chemical
resistance, excellent abrasion and outdoor UV
protection.Thiscoatingexceedsprotective
qualitiesofAirDryHeresiteandHeresite
BakedPhenolic.
BakedEnamelDecorativeCoatingsare heat
cured enamels applied either as wet paints or
electrostaticpowders.Customerscanchoose
from16standarddecorativecolorsorcolor
match any color.
Allcoatingswithrelativeresistancechartscan
befoundinGreenheck’sProductApplication
Guide,PerformanceCoatingsforVentilation
Products.
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